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Preface


















                  Wireless communication has undergone rapid development during the
                  past four decades. Starting with the first generation wireless communi-
                  cations in the 1970s, the industry progressed to the second generation in
                  the 1990s, the third generation in the 2000s, and at present, is entering
                  the fourth generation. Applications range from cellular mobile phones to
                  healthcare and radio frequency identifications, to name just a few.
                    Base station antennas are important components of any wireless com-
                  munication system. The wide range of applications poses stringent speci-
                  fications in power efficiency, sectorial directivity, polarization diversity,
                  and adaptability. In addition, factors such as visual attractiveness, elec-
                  tromagnetic impact on environment, and, above all, cost are important
                  considerations. The art of designing base station antennas is thus at
                  the forefront of antenna technology and presents challenging problems
                  requiring innovative solutions.
                    This book, Antennas for Base Stations in Wireless Communications,
                  edited by Zhi Ning Chen and Kwai-Man Luk, is a timely and unique con-
                  tribution that addresses the background, fundamental principles, and
                  practical solutions to many challenges in base station antenna design.
                  Both Dr. Chen and Dr. Luk are well known and have done distinguished
                  work in the field. They have assembled an international group of experts
                  to contribute to the book, which covers all of the relevant issues. The
                  authors, who are from industry, research institutions, and universities,
                  have extensive experience in the research, development, and applica-
                  tion of antennas in wireless communications. They provide perspectives
                  from diverse backgrounds and, in many instances, describe their own
                  solutions to the challenges of designing base station antennas.
                    This book will be a welcome addition to the library of anyone inter-
                  ested in the forefront of antenna technology.
                                                                     —Kai Fong Lee
                                                            University of Mississippi
                                                                 Oxford, Mississippi
                                                                          May 2009


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